Frequencies for road_fnc variable in person dataset :

       RDWY |
   FUNCTION |
      CLASS |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         75        9.19        9.19
          2 |         64        7.84       17.03
          3 |        130       15.93       32.97
          4 |         74        9.07       42.03
          5 |         13        1.59       43.63
          6 |         91       11.15       54.78
         11 |         60        7.35       62.13
         12 |         35        4.29       66.42
         13 |        117       14.34       80.76
         14 |         64        7.84       88.60
         15 |         61        7.48       96.08
         16 |         32        3.92      100.00
------------+-----------------------------------
      Total |        816      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016